<template>
	<div class="wrapper">
	  <swiper :options="swiperOption" v-if="showSwiper">
      <swiper-slide v-for="item of list" :key="item.id">
        <img class="swiper-img" :src="item.imgUrl" />
      </swiper-slide>
		<div class="swiper-pagination" slot="pagination"></div>
	</swiper>
	</div>
</template>

<script>
	export default {
		name: 'HomeSwiper',
		props: {
		  list: Array
		},
		data () {
		  return {
		  	swiperOption: {
		  		pagination: '.swiper-pagination',
		  		loop: true
		  	}
		  }
		},
		computed: {
			showSwiper () {
				return this.list.length
			}
		}
	}
</script>

<style lang='stylus' scoped>
 .wrapper >>> .swiper-pagination-bullet-active
    background: #fff
 .wrapper
    overflow: hidden
    width: 100%
    height: 0
    padding-bottom: 31.25%
    background: #eee
    .swiper-img
      width: 100%
      //无法 继承wrapper 父元素的高度
      height: 129.5px
</style>
